Results 31 to 40 of about 6,255 (211)

From the ‘blazar sequence' to unification of blazars and radio galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
7 pages, 2 table, 5 figures, accepted for publication in ...
Xiong, Dingrong   +3 more
openaire   +2 more sources

-BAT blazars

open access: yes, 2023
We present results from the first dedicated study in the time domain of the hard X-ray variability behavior of blazars on long timescales based on $\sim$13 years of continuous hard X-ray data in the 14-195 keV band.
Sergio A Mundo   +3 more
core   +1 more source

An Optical Overview of Blazars with LAMOST. I. Hunting Changing-look Blazars and New Redshift Estimates [PDF]

open access: yes, 2021
The extragalactic γ-rays sky observed by the Fermi Large Area Telescope (LAT) is dominated by blazars. In the fourth release of the Fermi LAT Point Source Catalog (4FGL) are sources showing a multifrequency behavior similar to that of blazars but lacking
D'Abrusco, R   +26 more
core   +1 more source

Searches for IceCube neutrinos from blazar flares using correlations with gamma-ray lightcurves [PDF]

open access: yesEPJ Web of Conferences, 2019
Blazars have long been considered as accelerator candidates for cosmic rays. In such a scenario, hadronic interactions in the jet would produce neutrinos and gamma rays.
Raab Christoph   +1 more
doaj   +1 more source

Probing Neutrino Production in Blazars by Millimeter VLBI

open access: yesGalaxies, 2023
The advancement of neutrino observatories has sparked a surge in multi-messenger astronomy. Multiple neutrino associations among blazars are reported while neutrino production sites are located within their central (sub)parsecs.
Yuri Y. Kovalev   +3 more
doaj   +1 more source

Blazars

open access: yesAIP Conference Proceedings, 2001
Invited talk at "International Symposium on High Energy Gamma-Ray Astronomy", Heidelberg, Eds. F. Aharonian and H.
Sikora, M., Madejski, G.
openaire   +3 more sources

Multi-Wavelength Intra-Day Variability and Quasi-Periodic Oscillation in Blazars

open access: yesGalaxies, 2017
We reviewed multi-wavelength blazars variability and detection of quasi-periodic oscillations on intra-day timescales. The variability timescale from a few minutes to up to less than a days is commonly known as intra-day variability.
Alok C. Gupta
doaj   +1 more source

X-ray Spectral Evolution of High Energy Peaked Blazars

open access: yesGalaxies, 2020
The synchrotron hump of the high energy peaked blazars generally lies in the 0.1–10 keV range and such sources show extreme flux and spectral variability in X-ray bands. Various spectral studies showed that the X-ray spectra of high energy peaked blazars
Haritma Gaur
doaj   +1 more source

Immunohistopathology of oral mucosal chronic graft‐versus‐host disease severity and duration

open access: yesOral Diseases, Volume 29, Issue 8, Page 3346-3359, November 2023., 2023
Abstract Objective Chronic graft‐versus‐host disease (cGVHD) is the main cause of late non‐relapse mortality following hematopoietic cell transplantation. Oral mucosal (om‐) cGVHD is common, but diagnosis and assessment rely on clinical interpretation and patient‐reported symptoms.
Victor Tollemar   +8 more
wiley   +1 more source

Accretion discs in blazars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
Accepted for publication (17 August 2009) in ...
Jolley, E. J. D.   +3 more
openaire   +3 more sources

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